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ar71xx: ar934x_nfc: allow to control DMA data swap via platform data

Browse Source 
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34588 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2012-12-10 10:38:07 +00:00
parent e333d81785
commit c586ec0f29
6 changed files with 48 additions and 12 deletions
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5
target/linux/ar71xx/files/arch/mips/ath79/dev-nfc.c
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@ -80,6 +80,11 @@ void __init ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd))
ath79_nfc_data.scan_fixup = f;
}
void __init ath79_nfc_set_swap_dma(bool enable)
{
ath79_nfc_data.swap_dma = enable;
}
void __init ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts)
{
ath79_nfc_data.parts = parts;

4
target/linux/ar71xx/files/arch/mips/ath79/dev-nfc.h
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@ -11,16 +11,20 @@
#ifndef _ATH79_DEV_NFC_H
#define _ATH79_DEV_NFC_H
struct mtd_partition;
#ifdef CONFIG_ATH79_DEV_NFC
void ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts);
void ath79_nfc_set_select_chip(void (*f)(int chip_no));
void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd));
void ath79_nfc_set_swap_dma(bool enable);
void ath79_register_nfc(void);
#else
static inline void ath79_nfc_set_parts(struct mtd_partition *parts,
int nr_parts) {}
static inline void ath79_nfc_set_select_chip(void (*f)(int chip_no)) {}
static inline void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd)) {}
static inline void ath79_nfc_set_swap_dma(bool enable) {}
static inline void ath79_register_nfc(void) {}
#endif

1
target/linux/ar71xx/files/arch/mips/ath79/mach-rb2011.c
View File

@ -200,6 +200,7 @@ static void __init rb2011_nand_init(void)
ath79_nfc_set_parts(rb2011_nand_partitions,
ARRAY_SIZE(rb2011_nand_partitions));
ath79_nfc_set_select_chip(rb2011_nand_select_chip);
ath79_nfc_set_swap_dma(true);
ath79_register_nfc();
}

45
target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
View File

@ -174,6 +174,7 @@ struct ar934x_nfc {
struct device *parent;
void __iomem *base;
void (*select_chip)(int chip_no);
bool swap_dma;
int irq;
wait_queue_head_t irq_waitq;
@ -190,6 +191,8 @@ struct ar934x_nfc {
unsigned int buf_size;
int buf_index;
bool read_id;
int erase1_page_addr;
int rndout_page_addr;
@ -591,7 +594,10 @@ ar934x_nfc_read_status(struct ar934x_nfc *nfc)
nfc_dbg(nfc, "read status, cmd:%08x status:%02x\n",
cmd_reg, (status & 0xff));
nfc->buf[0 ^ 3] = status;
if (nfc->swap_dma)
nfc->buf[0 ^ 3] = status;
else
nfc->buf[0] = status;
}
static void
@ -600,6 +606,7 @@ ar934x_nfc_cmdfunc(struct mtd_info *mtd, unsigned int command, int column,
{
struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd);
nfc->read_id = false;
if (command != NAND_CMD_PAGEPROG)
nfc->buf_index = 0;
@ -609,6 +616,7 @@ ar934x_nfc_cmdfunc(struct mtd_info *mtd, unsigned int command, int column,
break;
case NAND_CMD_READID:
nfc->read_id = true;
ar934x_nfc_send_readid(nfc, command);
break;
@ -717,13 +725,15 @@ static u8
ar934x_nfc_read_byte(struct mtd_info *mtd)
{
struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd);
unsigned int buf_index;
u8 data;
WARN_ON(nfc->buf_index >= nfc->buf_size);
buf_index = nfc->buf_index ^ 3;
data = nfc->buf[buf_index];
if (nfc->swap_dma || nfc->read_id)
data = nfc->buf[nfc->buf_index ^ 3];
else
data = nfc->buf[nfc->buf_index];
nfc->buf_index++;
return data;
@ -737,9 +747,16 @@ ar934x_nfc_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
WARN_ON(nfc->buf_index + len > nfc->buf_size);
for (i = 0; i < len; i++) {
nfc->buf[nfc->buf_index ^ 3] = buf[i];
nfc->buf_index++;
if (nfc->swap_dma) {
for (i = 0; i < len; i++) {
nfc->buf[nfc->buf_index ^ 3] = buf[i];
nfc->buf_index++;
}
} else {
for (i = 0; i < len; i++) {
nfc->buf[nfc->buf_index] = buf[i];
nfc->buf_index++;
}
}
}
@ -754,9 +771,16 @@ ar934x_nfc_read_buf(struct mtd_info *mtd, u8 *buf, int len)
buf_index = nfc->buf_index;
for (i = 0; i < len; i++) {
buf[i] = nfc->buf[buf_index ^ 3];
buf_index++;
if (nfc->swap_dma || nfc->read_id) {
for (i = 0; i < len; i++) {
buf[i] = nfc->buf[buf_index ^ 3];
buf_index++;
}
} else {
for (i = 0; i < len; i++) {
buf[i] = nfc->buf[buf_index];
buf_index++;
}
}
nfc->buf_index = buf_index;
@ -1028,6 +1052,7 @@ ar934x_nfc_probe(struct platform_device *pdev)
nfc->parent = &pdev->dev;
nfc->select_chip = pdata->select_chip;
nfc->swap_dma = pdata->swap_dma;
nand = &nfc->nand_chip;
mtd = &nfc->mtd;

1
target/linux/ar71xx/files/include/linux/platform/ar934x_nfc.h
View File

@ -22,6 +22,7 @@ struct ar934x_nfc_platform_data {
struct mtd_partition *parts;
int nr_parts;
bool swap_dma;
void (*hw_reset)(bool active);
void (*select_chip)(int chip_no);
int (*scan_fixup)(struct mtd_info *mtd);

4
target/linux/ar71xx/patches-3.6/a05-ar934x_nfc-add-buffer-verification.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/nand/ar934x_nfc.c
+++ b/drivers/mtd/nand/ar934x_nfc.c
@@ -762,6 +762,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
@@ -786,6 +786,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
nfc->buf_index = buf_index;
}
@ -19,7 +19,7 @@
static void
ar934x_nfc_hw_init(struct ar934x_nfc *nfc)
{
@@ -1047,6 +1059,7 @@ ar934x_nfc_probe(struct platform_device
@@ -1072,6 +1084,7 @@ ar934x_nfc_probe(struct platform_device
nand->read_byte = ar934x_nfc_read_byte;
nand->write_buf = ar934x_nfc_write_buf;
nand->read_buf = ar934x_nfc_read_buf;